EP3265261A1 - Procédé de brasage pour assembler deux éléments via un composé intermétallique; dispositif comprenant deux éléments assemblés par un composant intermétallique - Google Patents
Procédé de brasage pour assembler deux éléments via un composé intermétallique; dispositif comprenant deux éléments assemblés par un composant intermétalliqueInfo
- Publication number
- EP3265261A1 EP3265261A1 EP16719439.8A EP16719439A EP3265261A1 EP 3265261 A1 EP3265261 A1 EP 3265261A1 EP 16719439 A EP16719439 A EP 16719439A EP 3265261 A1 EP3265261 A1 EP 3265261A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elements
- brazing
- materials
- intermetallic compound
- melting temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
- B23K1/0016—Soldering of electronic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering or brazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering or brazing
- B23K35/0244—Powders, particles or spheres; Preforms made therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400°C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400°C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550°C
- B23K35/3013—Au as the principal constituent
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/40—Semiconductor devices
Definitions
- the solder solution of a metal alloy used to assemble the silicon carbide chip on an electronic circuit must have a melting temperature very much higher than the nominal operating temperature. This difference in temperature makes it possible to obtain optimum operating reliability. However, by increasing too much this melting temperature, there is a very high risk of damaging the rest of the electronic circuit.
- the invention aims in particular to overcome the disadvantages mentioned above.
- the invention aims to provide a brazing process for assembling two elements that will be implemented in a high temperature environment.
- the brazing process for assembling two elements has an easy implementation, inexpensive and a reduced implementation time.
- the invention relates to a brazing process for assembling two elements, said method comprising the steps of:
- the resulting joint is thus composed of a compound (or precipitate) intermetallic, very stable and very high melting temperature.
- An advantage of this technology is to allow brazing at a relatively reasonable temperature while the created seal is efficient up to the melting temperature of the intermetallic compound which is greater than the nominal operating temperature of the two elements and greater than the temperature. melting each of the selected brazing materials taken alone. This operating temperature in the aeronautical field may be of the order of 300 ° C.
- an addition of the present invention is to propose a mixture of two alloys in the liquid-liquid state, contrary to the solutions known assembly of liquid-metal combining component and thus playing on the atomic diffusion of the liquid in the metal.
- the mixture is instantaneous. This solution is innovative in that it allows to shorten the implementation time.
- brazing process according to the invention may have one or more additional characteristics below, considered individually or in any technically feasible combination:
- solder material selected is an alloy or a pure metal
- One of the two solder materials selected is an Au80Sn20 type alloy and the other of the two solder materials selected is pure tin;
- Each selected brazing material is in the form of:
- the high viscosity organic material acts as a deoxidizing agent
- the powder mixed with a high viscosity organic material is positioned between the two elements by means of a syringe;
- One of the two elements is formed by a substrate and the other of the two elements is formed by an electronic component;
- the difference between each of the two melting temperatures of the two brazing materials selected and the melting temperature of the intermetallic compound is greater than 100 ° C.
- One aspect of the invention also relates to a device comprising two elements integral with each other, said two elements being secured to each other via an intermetallic compound obtained via the melting of two brazing materials, said intermetallic compound having a temperature of melting higher than the melting temperature of each of the two brazing materials.
- FIG. 1 illustrates a block diagram of the steps of the method according to the invention
- FIG. 2 illustrates a tin and gold binary phase change diagram
- FIG. 3 schematically illustrates an embodiment of a device according to the invention.
- FIG. 1 illustrates the steps of the brazing process 100 for assembling two elements in accordance with the invention.
- the two elements are formed by a first element of the substrate type and a second element of the electronic component type, such as an electronic chip.
- the brazing process 100 comprises a step 101 for selecting two brazing materials capable of generating, when heated and fused, an intermetallic compound having a melting point higher than the melting temperature of each of the selected materials taken alone.
- each solder material selected is an alloy or a pure metal.
- a first pure metal brazing material for example pure tin whose melting point is 232 ° C.
- a second alloy brazing material for example Au80Sn20 alloy whose melting temperature is 278 ° C. After heating and fusing the pure tin and the Au80Sn20 alloy, the compound intermetallic obtained will be an AuSn type alloy whose melting temperature is 419 ° C.
- Figure 2 illustrates a tin-gold binary phase change diagram.
- an intermetallic compound whose temperature is required melting point is well above 300 ° C.
- the intermetallic compound formed by the AuSn alloy whose melting point is 419.3 ° C it is advantageous to select the intermetallic compound formed by the AuSn alloy whose melting point is 419.3 ° C.
- the intermetallic compound is formed of an alloy having 62.5% by weight of gold and 37.5% by weight of tin.
- the brazing process 100 further comprises a positioning step 102 of the two brazing materials selected between the two elements.
- Each of the two brazing materials mentioned above can be in the form of:
- preform also called strapping
- powder homogeneously mixed with a high viscosity organic material commonly called "solder cream"
- the high viscosity organic material acting as a deoxidizing agent.
- solder materials when one or both solder materials are in the form of powder mixed with a high viscosity organic material, it can be positioned between the two elements by means of a syringe.
- the brazing process 100 also comprises a step 103 of heating and fusing the selected brazing materials to substantially achieve the melting temperature of each of the selected brazing materials so as to obtain the precipitation of an intermetallic compound having a melting temperature. greater than the melting temperature of each of the selected materials taken alone.
- the substrate and the electronic chip may be positioned in an environment whose nominal operating temperature exceeds 309 ° C without risk of being separated from one another.
- the present invention consists of a brazing solution for assembling two elements, by melting two metals or alloys of metals, at a temperature allowing the precipitation of a single intermetallic compound, having a point melting point higher than the melting temperatures of the two metals or alloys of starting metals.
- the process 100 according to the invention makes it possible to obtain a brazing joint composed of 100% of a intermetallic compound that is very stable over time, unlike the complex metallographic associations that are generally found in alloys of solders.
- the invention also relates to a device 1 according to the invention comprising two elements 2 and 3 integral with one another. FIG. 3 illustrates such a device 1.
- a first element is formed by an electronic chip 2 and a second element is formed by a substrate 3, the electronic chip 2 the substrate 3 being joined together via an intermetallic compound 4 obtained via the fusion of two solder materials.
- the intermetallic compound 4 has a melting point higher than the melting temperature of each of the two fused solder materials.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1551818A FR3033272B1 (fr) | 2015-03-04 | 2015-03-04 | Procede de brasage pour assembler deux elements via un compose intermetallique |
| PCT/FR2016/050489 WO2016139429A1 (fr) | 2015-03-04 | 2016-03-03 | Procédé de brasage pour assembler deux éléments via un compose intermétallique; dispositif comprenant deux éléments assemblés par un composant intermétallique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3265261A1 true EP3265261A1 (fr) | 2018-01-10 |
| EP3265261B1 EP3265261B1 (fr) | 2021-08-04 |
Family
ID=54014908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16719439.8A Active EP3265261B1 (fr) | 2015-03-04 | 2016-03-03 | Procede de d'assemblage par brasage de deux elements via un compose intermetallique |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10646942B2 (fr) |
| EP (1) | EP3265261B1 (fr) |
| CN (1) | CN107427946B (fr) |
| FR (1) | FR3033272B1 (fr) |
| WO (1) | WO2016139429A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182718B (zh) * | 2021-04-16 | 2023-03-03 | 隆基绿能科技股份有限公司 | 太阳能电池组件的焊接方法及太阳能电池组件 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW238419B (fr) * | 1992-08-21 | 1995-01-11 | Olin Corp | |
| JP3074649B1 (ja) * | 1999-02-23 | 2000-08-07 | インターナショナル・ビジネス・マシーンズ・コーポレ−ション | 無鉛半田粉末、無鉛半田ペースト、およびそれらの製造方法 |
| US20030015220A1 (en) * | 2001-07-18 | 2003-01-23 | Pennington Michael A. | Gas dilution method and apparatus |
| JP2004306121A (ja) * | 2003-04-09 | 2004-11-04 | Sumitomo Metal Mining Co Ltd | Au・Sn合金箔の製造方法 |
| US8002905B2 (en) * | 2003-06-25 | 2011-08-23 | Behr Gmbh & Co. Kg | Fluxing agent for soldering metal components |
| US20050184304A1 (en) * | 2004-02-25 | 2005-08-25 | Gupta Pavan O. | Large cavity wafer-level package for MEMS |
| US20050253282A1 (en) * | 2004-04-27 | 2005-11-17 | Daoqiang Lu | Temperature resistant hermetic sealing formed at low temperatures for MEMS packages |
| CN100583432C (zh) * | 2004-05-06 | 2010-01-20 | Nxp股份有限公司 | 组装方法和由该方法制成的组件 |
| KR100867871B1 (ko) * | 2005-01-11 | 2008-11-07 | 가부시키가이샤 무라타 세이사쿠쇼 | 솔더 페이스트, 및 전자장치 |
| JP4617902B2 (ja) * | 2005-01-31 | 2011-01-26 | 信越半導体株式会社 | 発光素子及び発光素子の製造方法 |
| JP5142999B2 (ja) * | 2006-07-05 | 2013-02-13 | 富士電機株式会社 | クリームはんだ及び電子部品のはんだ付け方法 |
| JP5152727B2 (ja) * | 2007-12-21 | 2013-02-27 | ハリマ化成株式会社 | アルミニウムろう付け用ペースト組成物 |
| FR2961945B1 (fr) * | 2010-06-23 | 2012-08-17 | Commissariat Energie Atomique | Procede de scellement de deux elements par thermocompression a basse temperature |
| TW201210733A (en) * | 2010-08-26 | 2012-03-16 | Dynajoin Corp | Variable melting point solders |
| JPWO2012118076A1 (ja) * | 2011-03-02 | 2014-07-07 | 千住金属工業株式会社 | 無残渣フラックス |
-
2015
- 2015-03-04 FR FR1551818A patent/FR3033272B1/fr active Active
-
2016
- 2016-03-03 US US15/555,197 patent/US10646942B2/en active Active
- 2016-03-03 CN CN201680013602.8A patent/CN107427946B/zh active Active
- 2016-03-03 EP EP16719439.8A patent/EP3265261B1/fr active Active
- 2016-03-03 WO PCT/FR2016/050489 patent/WO2016139429A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3033272B1 (fr) | 2017-03-24 |
| FR3033272A1 (fr) | 2016-09-09 |
| CN107427946A (zh) | 2017-12-01 |
| US10646942B2 (en) | 2020-05-12 |
| WO2016139429A1 (fr) | 2016-09-09 |
| EP3265261B1 (fr) | 2021-08-04 |
| US20180050405A1 (en) | 2018-02-22 |
| CN107427946B (zh) | 2020-10-13 |
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